Design And Implementation Of Sitting Position Monitoring And Reminding System Based On Flexible Array Pressure Sensor

With the quickening of the pace of society and the increasing of life pressure,the length of reading and writing of the group of officers and teenagers is also growing.The sitting state where they gradually become the state most of the time has become one of the essential conditions.The long-term nonstandard sitting posture will cause some harm to people's health,and will also have adverse effects on the learning efficiency.In addition,in a bad posture for a longtime if not adjusted,it will not only lead to imbalance of tissues,organs,nerves and cervical vertebra in human body,but also will cause many hazards,such as capillaries blocked,nerve numbness,various cervical diseases In severe cases,it will lead to sores,pressure sores,tissue necrosis and paralysis and so on.Based on the flexible array pressure sensor,a new set of portable real-time monitoring and intelligent reminding system for sitting posture is designed in this thesis.According to the biomechanical and ergonomic rules,the system collects people's pressure distribution data of the buttocks and legs while sitting on the chair through a large-scale flexible array pressure sensor of 60cm*60cm.Meanwhile,it will collect the environmental parameters in real time through the sensor of temperature,humidity,Light sensor.The system uploads the collected pressure distribution data and environment parameters to the cloud server for analysis and processing.First,we preprocessed the original data of pressure distribution,then identified the posture of sitting posture through the proposed posture recognition and analysis algorithm,and analyzed the current sitting posture in real time.We collected the temperature,humidity,light intensity parameters,to judge the threshold for analyzing the process of sitting environment.Finally,the cloud server sends the analysis results to the mobile APP client through the network.It displays the current sitting posture and the environment in real time,reminds users timely to correct bad posture and adjust the harsh environment.Meanwhile,it stores data transmitted by the server during monitoring,which is convenient for users to view.The system is simple and interactive.With the portability of cell phone and pressure pad,users can achieve the effect of real-time warning and analysis.It helps users correct bad sitting and improve work and learning efficiency.